New to GXT and going the UiBinder route. My tree looks like:
<ui:with field="store" type=""/>
<ui:with field="valueProvider" type="com.sencha.gxt.core.client.ValueProvider"/>
<ui:with field="iconProvider" type=""/>
<ui:with field="treeStyle" type="com.sencha.gxt.widget.core.client.tree.TreeStyle"/>
<ui:with field="loader" type="" />

<tree:Tree ui:field="tree" valueProvider="{valueProvider}" store="{store}" loader="{loader}" stateful="true" iconProvider="{iconProvider}" style="{treeStyle}" />
in ExtJS, the tree icon would switch to the throbber when the tree was loading, but that doesn't happen anymore. Is there some attribute I need to set on Tree or else some override in the store or loader?